// StCursor.h
// (c) 2008, Charles Lechasseur
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once

#include <windows.h>


//
// StCursor
//
// Shows a cursor during lifecycle and restores previous cursor when destroyed.
//
class StCursor
{
public:
                //
                // Constructor.
                // Loads a cursor and displays it, saving the old cursor.
                //
                // @param p_hModule Handle of module containing cursor resource.
                //                  To load a system cursor, pass NULL.
                // @param p_pCursorName Name of cursor resource to load.
                //                      Can be a resource ID (using MAKEINTRESOURCE)
                //                      or an IDC_ const value for system cursors.
                //
                StCursor(HINSTANCE p_hModule, LPCTSTR p_pCursorName)
                    : m_hPreviousCursor(0)
                {
                    HCURSOR hNewCursor = ::LoadCursor(p_hModule, p_pCursorName);
                    m_hPreviousCursor = ::SetCursor(hNewCursor);
                }

                //
                // Destructor.
                // Restores the cursor saved in the constructor.
                //
                ~StCursor()
                {
                    ::SetCursor(m_hPreviousCursor);
                }

private:
    // Handle of previous cursor.
    HCURSOR     m_hPreviousCursor;

    // THESE METHODS ARE NOT IMPLEMENTED.
                StCursor(const StCursor&);
    StCursor&   operator=(const StCursor&);
};
